Table 5

 Descriptive features of patients with hypersensitivity pneumonitis (HP) and DPLD and comparative statistics; values are mean (SD)

HP (n = 4)DPLD (n = 39)p Value
FEV1, forced expiratory volume in one second; FVC, forced vital capacity; FEV1/FVC, ratio of FEV1 to FVC; DLCO, diffusion capacity of the lung for carbon monoxide; DLCO/VA, DLCO adjusted for alveolar volume; Po2, partial oxygen pressure; NS, not significant.
Age (years)44.25 (10.6)49.20 (14.7)NS
Gender (M/F)20/192/2NS
Symptom duration (months)3.25 (1.5)22.19 (29.8)NS
Smoking status (pack-year)7.50 (15.0)13.84 (23.5)NS
Haemoglobin (g/l)140.5 (10.0)142.2 (17.0)NS
Leucocytes (×109/l)7.02 (1.6)8.28 (3.6)NS
Eosinophils (×109/l)0.12 (0.05)0.24 (0.2)NS
Erythrocyte sedimentation rate (hours)16.5 (7.235.15 (25.8)NS
FEV1 (%)103.50 (11.7)71.79 (20.0)<0.05
FVC (%)100.75 (15.5)75.14 (22.7)<0.05
FEV1/FVC86.25 (3.4)81.38 (11.9)NS
DLCO (%)67.75 (24.1)56.61 (23.3)NS
DLCO/VA (%)73.50 (16.2)94.03 (29.9)NS
Po2 (kPa)10.9 (1.7)8.4 (2.1)NS